is a concise guide to the Bhikkhu Pāṭimokkha based on The Buddhist Monastic Code 1 by Ṭhānissaro Bhikkhu. Designed as a study aid or reference for Theravāda Buddhist monks and lay readers interested in learning more about the Theravāda monastic rules, CBMC1 incorporates information from The Buddhist Monastic Code 2 as well as other English translations of the Bhikkhu Pāṭimokkha or the Sutta-Vibhaṅga, including Suddhāso Bhikkhu’s Analysis of the Bhikkhu Pātimokkha: a translation of the Mahā -Vibhaṅga in the Vinaya-Piṭaka, I.B. Horner’s The Book of the Discipline, K.R. Norman’s The Pātimokkha, and Bhikkhu Ñāṇatusita’s A Translation and Analysis of the Pātimokkha.

Version 4.1 features updated discussions of Pācittiya 5, Pācittiya 6, gelatin, and an additional appendix, appendix 6, on interpretations of Pācittiya 38. 4.1 also now has a companion print edition for printing on black-and-white printers.